public void ResizeImage(string OrigFile, string NewFile, int NewWidth, int MaxHeight, bool ResizeIfWider)
{
FullSizeImage = Image.FromFile(OrigFile); // Ensure the generated thumbnail is not being used by rotating it 360 degrees
FullSizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
FullSizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
if (ResizeIfWider)
{
if (FullSizeImage.Width <= NewWidth)
{
NewWidth = FullSizeImage.Width;
}
}
int NewHeight = FullSizeImage.Height * NewWidth / FullSizeImage.Width;
if (NewHeight > MaxHeight)
{ // Height resize if necessary
NewWidth = FullSizeImage.Width * MaxHeight / FullSizeImage.Height;
NewHeight = MaxHeight;
}
// Create the new image with the sizes we've calculated
NewImage = FullSizeImage.GetThumbnailImage(NewWidth, NewHeight, null, IntPtr.Zero);
FullSizeImage.Dispose();
jpgEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object. An EncoderParameters object has an array of EncoderParameter objects. In this case, there is only one EncoderParameter object in the array.
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
NewImage.Save(NewFile, jpgEncoder, myEncoderParameters);
}
private void backgroundWorkerImages_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
IList <FileInfo> FileCollection = e.Argument as IList <FileInfo>;
foreach (FileInfo File in FileCollection)
{
if ((worker.CancellationPending == true))
{
e.Cancel = true;
break;
}
else
{
try
{
Image image = Image.FromFile(File.FullName);
if (image.Height > numericUpDownHeight.Value || image.Width > numericUpDownWidth.Value)
{
//Keep the ratio aspect
decimal ratio = (decimal)image.Height / (decimal)image.Width;
Image NewImage;
NewImage = GetResizedImage(image,
(int)numericUpDownWidth.Value,
(int)numericUpDownHeight.Value);
NewImage.Save(Path.Combine(PathDestinationtextBox.Text,
Properties.Settings.Default.ResizedPrefix + File.Name));
//ImageFormat.Jpeg);
}
image.Dispose();
worker.ReportProgress(1);
}
catch (Exception ex)
{
/*MessageBox.Show("Se produjo la siguiente excepción: ", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
* backgroundWorkerImages.CancelAsync();*/
}
}
}
}
public string UploadImage(HttpContext context, string UploadPathTemp, string UploadPath)
{
string savedFileName = "";
bool IsEncodeFileName = false;
int Width = -1;
int Height = -1;
bool isCreateThumb = false;
string json = "";
foreach (string file in context.Request.Files)
{
HttpPostedFile hpf = context.Request.Files[file] as HttpPostedFile;
if (hpf.ContentLength == 0)
{
continue;
}
else
{
IsEncodeFileName = !String.IsNullOrEmpty(context.Request.QueryString["IsEncodeFileName"]) ? Convert.ToBoolean(context.Request.QueryString["IsEncodeFileName"]) : false;
savedFileName = GetFileName(IsEncodeFileName, hpf.FileName);
isCreateThumb = !String.IsNullOrEmpty(context.Request.QueryString["isCreateThumb"]) ? Convert.ToBoolean(context.Request.QueryString["isCreateThumb"]) : false;
//Upload len thu muc temp
hpf.SaveAs(UploadPathTemp + savedFileName);
//Upload file
//Resize neu can
Height = !String.IsNullOrEmpty(context.Request.QueryString["Height"]) ? Convert.ToInt32(context.Request.QueryString["Height"]) : -1;
Width = !String.IsNullOrEmpty(context.Request.QueryString["Width"]) ? Convert.ToInt32(context.Request.QueryString["Width"]) : -1;
Image NewImage;
if ((Height != -1) && (Width != -1))
{
NewImage = ResizeImageFromFile(UploadPathTemp + savedFileName, Height, Width, false, false);
//save sang thu muc thuc su
NewImage.Save(UploadPath + savedFileName);
}
else if ((Height != -1) || (Width != -1))
{
NewImage = ResizeImageFromFile(UploadPathTemp + savedFileName, Height, Width, true, true);
//save sang thu muc thuc su
NewImage.Save(UploadPath + savedFileName);
}
else
{
NewImage = Image.FromFile(UploadPathTemp + savedFileName);
//save sang thu muc thuc su
NewImage.Save(UploadPath + savedFileName);
}
//=======================================
// Tao thumb
if (isCreateThumb == true)
{
NewImage = ResizeImageFromFile(UploadPathTemp + savedFileName, 200, 200, false, true);
NewImage.Save(UploadPath + "thumb_" + savedFileName);
}
NewImage.Dispose();
json = json + "{\"Status\":\"Success\",\"File\":\"" + (UploadPath + savedFileName).Replace("\\", "\\\\") + "\",\"Messenger\":\"" + "messsssss" + "\"}";
}
}
return(json);
}